M 6.6 earthquake – Baja California-Sonora Border Region, Mexico
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Local time: Nov 20, 1915 · 16:25 (UTC-7:48)
StrongShallow · 10 km
Reviewed by a seismologist
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- Magnitude
- 6.6moment magnitude (mw)
- Depth
- 10 kmShallow earthquake
- Epicenter
- 31.932, -114.94542 km from Ciudad Guadalupe Victoria
- Energy released
- 120 kilotons of TNTabout 8 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 0M2.5+ within 43 km
- Significance
- 664USGS score, 0–1,000+
The strongest here since 1903
The last earthquake at least as strong within 300 km struck on Jan 24, 1903.
How strong was it?
Strong earthquake. It released 120 kilotons of TNT, 251 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
The strongest earthquakes within 300 km
Since 1900, around Mexico.
- 7.3 The 1992 Landers, California Earthquake Jun 28, 1992
- 7.2 The 2010 Sierra El Mayor, B.C., Mexico Earthquake Apr 4, 2010
- 6.9 The 1940 Imperial Valley, California Earthquake May 19, 1940
- 6.8 34km ENE of Maneadero, B.C., MX Feb 9, 1956
- 6.7 The 1918 San Jacinto, California Earthquake Apr 21, 1918
- 6.6 The 1987 Superstition Hills, California Earthquake Nov 24, 1987
- 6.6 The 1968 Borrego Mountain, California Earthquake Apr 9, 1968
- 6.6 The 1942 Fish Creek Mountains, California Earthquake Oct 21, 1942